Fix a couple small incompatibilities with header modules, and update the comment around where they're disabled to reflect that test macros, not logging macros, are the outstanding concern.

PiperOrigin-RevId: 364609985
Change-Id: I7b7e394e1f5a5019d348927c47026f616dcbcc03
diff --git a/quic/core/quic_path_validator_test.cc b/quic/core/quic_path_validator_test.cc
index e433f0c..1dfafc3 100644
--- a/quic/core/quic_path_validator_test.cc
+++ b/quic/core/quic_path_validator_test.cc
@@ -42,7 +42,7 @@
   MOCK_METHOD(QuicTime,
               GetRetryTimeout,
               (const QuicSocketAddress&, QuicPacketWriter*),
-              (const override));
+              (const, override));
 };
 
 class QuicPathValidatorTest : public QuicTest {